Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Can you tell if your crown is bad?

 
LinkBack Thread Tools Display Modes
  #1  
Old 11-10-2006, 11:45 PM
Bronze Member
 
Join Date: Nov 2005
Posts: 56
Can you tell if your crown is bad?

Hi all,
I have a Weatherby .270 win and I would get an inch pattern at 100 yards using 54 grains of IMR4350 using a speer bullet of 150 grains. Now my patten is about 8 inches now. It seemed to go bad over night. I clean my barrel after every outing with wipe out or sweets. I was told at the range that I could of damaged the crown? Can I see this with my own eyes or do I need to bring it to a gun smith. Any replys would help

Thanks Aaron
__________________
Always smile when your shooting its a privilege!
Reply With Quote
  #2  
Old 11-11-2006, 03:35 AM
Silver Member
 
Join Date: Mar 2004
Location: Australia
Posts: 112
Re: Can you tell if your crown is bad?

8MOA!?
Have you cheaked that your action/mount screws are tight? Have you tryed a diffrent scope?
__________________
Old aunts used to come up to me at weddings, poking me in the ribs & cackling "You're next". They stopped after I started doing the same thing to them at funerals.
Reply With Quote
  #3  
Old 11-11-2006, 05:27 AM
Gold Member
 
Join Date: Nov 2005
Location: Maryland
Posts: 830
Re: Can you tell if your crown is bad?

I agree with the previous post. You would have to seriously damage a crown to go from 1" to 8" groups.
Reply With Quote
  #4  
Old 11-11-2006, 09:32 AM
Bronze Member
 
Join Date: Nov 2005
Posts: 56
Re: Can you tell if your crown is bad?

I did check my scope mounts I have a Leupold VXIII 3.5x10x40 everything is solid that I can see. Thanks for the suggestion.

Aaron
__________________
Always smile when your shooting its a privilege!
Reply With Quote
  #5  
Old 11-11-2006, 01:14 PM
Official LRH Sponsor
 
Join Date: Jun 2004
Location: Fort Shaw, Montana
Posts: 6,796
Re: Can you tell if your crown is bad?

Its possible but I would agree that this is probably a mechanical issue more then anything, receiver screws, scope base screws, ring screws, I would check these first and then prove that scope is not the issue.

I would also recommend against using Sweets repeatedly, to strong for regular use. Gets some Tetras, its much easier on your bore.

Again, I would check the screws throughout your rifle and go from there. If nothing changes, check the scope with a known quality scope. If nothing changes then, I would take it to a local trusted smith and have it looked over to see what is going on.

Kirby Allen(50)
__________________
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

Farther, Faster and Flatter then ever before.

Web Page: www.apsrifles.com

allenmagnum@gmail.com
Reply With Quote
  #6  
Old 11-12-2006, 06:42 AM
Gold Member
 
Join Date: Feb 2005
Location: Texas born and raised
Posts: 746
Re: Can you tell if your crown is bad?

Just had a similar experience with two of my rifles.

First was a 25-06 which I have had since 87 and has always shot well within an inch at 200 yds. First thing was the factory stock warped similar experience as you mention. Changed out the stock with a Fajen in about 95, which was a laminate and had aluminum pillars. The action was a good tight fit and I screwed it in and went on about my business. All fine till about a month ago when I got her out for the annual check on the sight in. First noted the scope was foggy, not an issue, I have spares. But while reoving the rings, I noted the action move slightly in the stock. Found that the wood around the action and shrunk some allowing the action to only be sitting on the tops of the pillars. A week long glass bed and back to shooting 1" groups.

Same with a .270, shot lights out every since we had it. Same load year after year, putting them into nice clover leaves at 200yds. This year couldn't keep them on a 8x11 target at 100yds. Inspected the rifle for loose screws and such, then found excessive pressure on the barrel. Pulled the action and also found that the recoil lug part of the stock had a considerable amount of powdered wood in it from the recoil lug hitting it through they years. Cleaned it out and found that the lug was then loose in the slot. So another bedding job, and back in business.

Not saying that this is your case, but could be the stock has headed in it's own direction or that the lug area could be working against you. IT is definately worth a check if you have not changed anything else.
__________________
Later,
Mike / Tx

My Photo's

"Heck why would I lie, most folks don't believe the truth when I tell them"
Reply With Quote
  #7  
Old 11-12-2006, 10:41 AM
Bronze Member
 
Join Date: Nov 2005
Posts: 56
Re: Can you tell if your crown is bad?

Thanks for the info never thought of looking into that.

Thanks for all the info
Aaron
__________________
Always smile when your shooting its a privilege!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Can you tell if your crown is bad?
Thread Thread Starter Forum Replies Last Post
How bad is this crown? bookworm Rifles, Bullets, Barrels and Ballistics 18 05-15-2011 07:24 PM
barrel crown whitetail predator Gunsmithing 24 02-24-2011 09:01 AM
Recessed Crown? Forester Gunsmithing 3 09-27-2010 07:48 AM
crown dud Gunsmithing 12 03-08-2010 05:59 AM
Bad crown? Preda8or Reloading 4 06-15-2006 07:15 AM

Current Poll
Do You Think Slingshots Should Be Legalized For Hunting Brown Bear?
Yes - 47.31%
915 Votes
No - 52.69%
1,019 Vote
Total Votes: 1,934
You may not vote on this poll.

All times are GMT -5. The time now is 08:40 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC